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Immune cell 'survival' gene key to better myeloma treatments
Date:2/3/2013

ke antibodies that can be very damaging if there are too many. This happens in conditions such as myeloma a cancer of plasma cells and various forms of autoimmunity, such as systemic lupus erythamatosus or rheumatoid arthritis, where there are excessive levels of antibodies."

Myeloma is a blood cancer that affects more than 1200 Australians each year, and is more common in people over 60. It is caused by the uncontrolled production of abnormal plasma cells in the bone marrow and the build up of damaging antibodies in the blood. Rheumatoid arthritis and lupus are autoimmune diseases in which the antibodies produced by plasma cells attack and destroy the body's own tissues.

Associate Professor Tarlinton said that his hope was that the discovery could be used to develop new treatments for these conditions. "Myeloma in particular has a very poor prognosis, and is generally considered incurable," Associate Professor Tarlinton said. "Now that we know Mcl-1 is the one essential gene needed to keep plasma cells alive, we have begun 'working backwards' to identify all the critical molecules and signals needed to switch on Mcl-1 and keep the cells alive. Our hope is that we will identify some point in the internal cell signalling pathway, or a critical external molecule, that could be blocked to stop Mcl-1 being produced by the cell. This would be an important new platform for diseases that currently have no specific or effective treatment, such as myeloma, or offer new treatment options for people who don't respond well to existing treatments for diseases such as lupus or rheumatoid arthritis."


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Contact: Liz Williams
williams@wehi.edu.au
61-405-279-095
Walter and Eliza Hall Institute
Source:Eurekalert

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